#include<stdlib.h>
#include<stdio.h>
#include<unistd.h>
#include<sys/types.h>

int main(int argc,char *argv[]){

    FILE *fp;
    fp = fopen("test.txt","r");
    if(fp == NULL){ // if file not found
        printf("File not found\n");
        exit(1);
    }
    char ch;
    // while((ch = fgetc(fp)) != EOF){
    //     printf("%c",ch);
    // }
    // printf("\n");

    char *str = "abc";
    str = "ccc";
    // str[0] = 'A';
    printf("%s\n",str);
    fclose(fp);
    return 0;
}